1366 - Incorrect integer value: '' for column 'customer_id' at row 1

insert into whos_online (customer_id, full_name, session_id, ip_address, time_entry, time_last_click, last_page_url) values ('', 'Guest', '20qmg0ah24v9es0imv5jn4t166', '54.224.56.126', '1540285578', '1540285578', '/catalog/privacy.php?osCsid=1i5ku17e5f6k8nta6i80h8ql50')

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